In recent years rechargeable nonaqueous lithium air batteries have attracted much attention [1].However, it is very difficult for most batteries to work in the ambient air for the reason that the moisture and carbon dioxide in the air will affect their performance [1].If the reactive gas contains CO2, there will be Li2CO3 formation in the discharging process.It has been reported that Li2CO3 is very difficult to decompose in the carbonate-based electrolyte Li-O2 battery [2].H.S.Zhou reported that Li2CO3 product can be decomposed when the lithium air battery works in the ambient air [3].